JP4450195B2 - Knee bolster structure of the vehicle - Google Patents

Description

  The present invention relates to a knee bolster structure for protecting a passenger's knee at various knee input positions in various vehicle collision modes.

Conventionally, various knee bolsters having a function of receiving a leg portion such as a knee of an occupant including a driver and restraining the movement thereof are arranged in front of the driver's seat of the vehicle in the event of a vehicle collision. (For example, refer to Patent Documents 1 and 2 ).
Among these, in the conventional knee bolster 51 shown in FIGS. 12 and 13, a pair of left and right knee bolster members 53, 54 attached to a pipe-like steering support member 52 and extending rearward of the vehicle, and the knee bolster members 53, 54 A left-right integrated structure comprising a knee bolster panel 55 that connects the lower portions of each other is adopted. In the conventional vehicle, the knee bolster 51 having such a left-right integrated structure is provided to cope with a collision.
JP-A-8-164811 JP-A-11-180238

  However, the above-described conventional knee bolster 51 has a problem that it cannot cope with the impact load on the knee in the unoccupied configuration of the small occupant at the time of the vehicle collision. That is, the knee input position at the time of collision of a small occupant is lower than that of a passenger having a general physique. Along with this, the lower side of the lower inclined surface 55 a is deformed into a shape that moves forward of the vehicle, and the knee of the small occupant may go under the knee bolster panel 55. As a result, in the conventional knee bolster 51, the lower limb of the small occupant is sandwiched between the lower inclined surface 55a of the knee bolster panel 55 and the vehicle body floor. There is a problem that a compressive load is generated by the pushing force and a reaction force that pushes up the lower limb of the small occupant from the vehicle body floor, and the impact load on the knee and the lower limb of the small occupant increases.

  The present invention has been made in view of such a situation, and its purpose is to set various strengths by combining different shapes, thicknesses, etc., and lower side of the knee bolster panel at the time of knee collision of a small passenger It is an object of the present invention to provide a vehicle knee bolster structure that can prevent the movement of the vehicle, absorb the knee load of passengers of various physiques, and improve the shock absorption performance for each aspect of the collision.

In order to solve the above-described problems of the prior art, in the present invention, a pair of left and right upper panel members whose upper ends are attached to a steering support member extending along the vehicle width direction with a space therebetween, and the back side of the upper panel member And a pair of left and right lower panel members having upper ends attached to the steering support member at an interval and extending downward from the steering support member, the lower end portion of the upper panel member and the lower panel member In the knee bolster structure of a vehicle to which a lower end portion is connected, flanges bent toward the lower panel member are provided on both left and right sides of the upper panel member , and the upper panel member is connected to the steering wheel. an upper panel portion extending into the vehicle interior side from the support member, extending from the rear end of the upper panel portion downwardly Rutotomoni, bottom comprises respectively a lower panel section extending bent toward the vehicle front, the two bent portions for 3 divide the length direction on the top panel portion is provided, of these bent portions The front side has a downward convex shape, the rear side has an upward convex shape, the flange of the bent portion is provided with a notch, and the flange located at the upper and lower ends of the lower panel portion A stopper is provided at the lower end portion of the lower panel member that is provided with a notch and is disposed closer to the center in the vehicle width direction, and is provided at the lower portion of the upper panel member. The upper portions of the panel portions are connected to each other by a connection panel .

In the present invention, the upper portion of the lower panel portion of the upper panel member, the notches of the flange is formed narrower.

  In the present invention, the lower panel member is detachably fixed to the upper panel member and the steering support member.

In the present invention, a glove box lid is disposed on the vehicle interior side of the upper panel member and the lower panel member, and a sheet metal is disposed between the glove box lid and the lower panel portion of the upper panel member. The sheet metal panel includes a panel portion disposed along the lower panel portion of the pair of left and right upper panel members, and a concave portion formed by connecting the panel portions at the lower portion. It is formed in a letter shape.

As described above, in the knee bolster structure of the vehicle according to the present invention, the pair of left and right upper panel members that are attached to the steering support member extending along the vehicle width direction at an interval, and the rear side of the upper panel member. A lower end member of the upper panel member and a lower end portion of the lower panel member are provided with a pair of left and right lower panel members having upper ends attached to the steering support member at an interval and extending downward from the steering support member. And flanges bent toward the lower panel member are provided on both the left and right sides of the upper panel member , and the upper panel member is connected to the vehicle from the steering support member. an upper panel portion extending toward the cabin, extends from the rear end of the upper panel downwardly, the lower the vehicle before It bends toward includes respectively a lower panel section extending, wherein the upper panel portion is provided two bent portions for 3 divide the length direction, of these bent portions, the front side downward convex The rear side has an upwardly convex shape, the flange of the bent portion is provided with a notch, and the flange located at the upper and lower ends of the lower panel portion is provided with a notch. A stopper disposed toward the vehicle body member in the center of the vehicle is provided at the lower end portion of the lower panel member disposed closer to the center in the width direction, and the upper portion of the lower panel portion of the upper panel member is connected since they are connected to each other by the panel, it can be prevented at the time of small occupant knee collision suppressing the lower panel portion of the top panel member is moved toward the vehicle front, from entering below the knee panel member Both can absorb load on the occupant knee of various physique. Moreover, the movement of the panel member in the lateral direction can be restricted, and the panel member can be exhibited without impairing the function as a knee bolster. In addition, the lateral rigidity of the panel member can be secured, and the panel member can be prevented from falling in the lateral direction.

In the present invention, the upper portion of the lower panel portion of the upper panel member, the notches of the flange, the width is narrower, it is possible to improve the absorption of the occupant's knee load.

  Furthermore, in the present invention, the lower panel member is detachably fixed to the upper panel member and the steering support member. Therefore, knee strengths having different strengths can be obtained by changing the thickness and shape of the panel member. A bolster can be set, and shock absorption performance can be enhanced for each aspect of collision.

In the present invention, a glove box lid is disposed on the vehicle interior side of the upper panel member and the lower panel member, and a sheet metal is disposed between the glove box lid and the lower panel portion of the upper panel member. The sheet metal panel includes a panel portion disposed along the lower panel portion of the pair of left and right upper panel members, and a concave portion formed by connecting the panel portions at the lower portion. Since it is formed in a letter shape, it is possible to effectively absorb the impact load within the installation range of the glove box and the instrument panel above the glove box.

  Hereinafter, the present invention will be described in detail based on illustrated embodiments.

1 to 11 show an embodiment of a vehicle knee bolster structure according to the present invention. The knee bolster 1 to which the structure of the present embodiment is applied is positioned in front of the passenger seat in order to receive and protect knees of passengers of various physiques and restrain their movement in various collision modes of the vehicle. The instrument panel 2 is disposed inside and below.
1 to 3, the knee bolster 1 has a pair of left and right upper panel members 4 and 5 whose upper ends are attached to a steering support member 3 extending along the vehicle width direction at a predetermined interval. And a pair of left and right lower panel members 6, 7 provided on the steering support member 3 with their upper ends attached at predetermined intervals and provided on the back sides of the upper panel members 4, 5. These panel members 4, 5, 6, and 7 form a vertically integrated structure. And the lower panel part (after-mentioned) of the upper panel members 4 and 5 and the steering support member 3 are connected by the lower panel members 6 and 7, respectively. The width dimension of the lower panel members 6 and 7 is slightly smaller than the width dimension of the upper panel members 4 and 5.

Upper panel members 4 and 5 are upper panel portions 8 and 9 extending from steering support member 3 toward the vehicle interior side at a substantially horizontal angle, and downward from the rear end of upper panel portions 8 and 9 and toward the front of the vehicle. The upper and lower flange portions 14a, 14b, 15a and 15b are provided on the left and right sides of the lower panel portions 10 and 11, respectively. ing.
The knee bolster 1 according to the embodiment of the present invention is a combination of the upper panel members 4 and 5 and the lower panel members 6 and 7, and the impact is applied to the impact load on the lower side of these panel members. It has a structure that exhibits an absorption effect. For this reason, two bent portions 8a and 9a, which are caulked and bent in the upside down direction, are provided in the middle portion of the upper panel portions 8 and 9 of the upper panel members 4 and 5 at intervals in the longitudinal direction. The upper flanges 14a and 15a of the bent portions 8a and 9a are provided with notches 16 and 17 that are partially cut. In this way, by providing the bent portions 8a and 9a in the upper panel portions 8 and 9 of the upper panel members 4 and 5, and providing the notches 16 and 17 in the upper flanges 14a and 15a of the bent portions 8a and 9a, The knee 30a of the occupant 30 having a typical physique absorbs the load when it collides with the knee bolster 1 (see FIG. 7).

In addition, at least one of the upper and lower portions (the upper portion in the present embodiment) of the lower panel portions 10 and 11 of the upper panel members 4 and 5 is formed to be narrow. Moreover, the lower flanges 14b and 15b of the upper and lower portions of the lower panel portions 10 and 11 are provided with notches 18 and 19 that are partially cut. As described above, the upper portions of the lower panel portions 10 and 11 of the upper panel members 4 and 5 are formed narrow, and the notches 18 and 19 are provided in the lower flanges 14b and 15b of the upper and lower portions of the lower panel portions 10 and 11. Thus, the knee 31a of the small passenger 31 absorbs the load when it collides with the knee bolster 1 (see FIG. 7).
In the lower half of the lower panel portions 10 and 11, descending inclined surfaces 10a and 11a and ascending inclined surfaces 10b and 11b are formed in a curved shape so as to wrap around the front of the vehicle. 10b and 11b are superposed with the lower end portions of the lower panel members 6 and 7 placed thereon.

  The lower panel members 6, 7 are arranged to be inclined downward while extending from the steering support member 3 toward the vehicle interior side, and the upper and lower end portions thereof are provided with the steering support member 3 and the upper panel members 4, using the screws 20 and the like. 5 is detachably fixed to the lower panel sections 10 and 11 of the apparatus. Therefore, the knee bolster 1 can obtain various strengths selected according to the vehicle type and the like by changing the thickness and shape of the lower panel members 6 and 7.

On the other hand, the upper panel member 4 (or the lower panel member 6) disposed near the vehicle center in the vehicle width direction has a vehicle body member 21 at the vehicle central portion as shown in FIGS. A stopper 22 is provided that extends toward the front and restricts the lateral movement of the upper panel member 4, and the front end of the stopper 22 is bent toward the front of the vehicle. A joint portion between the upper panel member 4 and the stopper 22 is provided on an upward inclined surface 10b which is an extended portion extending in the vehicle front-rear direction, and a base end portion of the stopper 22 is joined to a lower surface of the upward inclined surface 10b. ing. The vehicle body member 21 at the center of the vehicle is composed of a glove box side stay 23 as a vertical member and an instrument panel center member 24 as a horizontal member. It is joined to the part.
Moreover, the stopper 22 is disposed in the vicinity of the joint C between the side stay 23 and the center member 24. That is, the front end portion of the stopper 22 is disposed at a position where it intersects with the joint C at substantially the same height. Therefore, when the knee input to the knee bolster 1 is oblique, even if the knee bolster 1 tries to move inward of the vehicle (in the direction of the arrow X1 in FIG. 8), the stopper 22 hits the joint C and becomes a support. 1 is configured to be restricted from moving inward of the vehicle. Even if the knee bolster 1 tries to move outside the vehicle (in the direction of arrow X2 in FIG. 8), the movement of the knee bolster 1 is restricted by the presence of a glove box described later.

A glove box 25 is disposed between the pair of left and right upper panel members 4 and 5 and the lower panel members 6 and 7, as shown in FIGS. The glove box 25 is attached to the lower side of the instrument panel 2 and is provided on the upper side of the box body 26 for storing small items and the vehicle interior side of the box body 26. It is composed of a glove box lid 27 to be moved.
In the glove box lid 27, a sheet metal panel 28 that receives an impact load at the time of knee input is disposed in the installation range of the glove box 25. The sheet metal panel 28 has a size that can be accommodated inside the glove box lid 27, and is formed in a concave shape with a notch at the upper center where a lock mechanism (not shown) is installed.

  As shown in FIG. 9, the upper portions of the lower panel portions 10 and 11 of the upper panel members 4 and 5 are connected to each other by a connection panel 29 extending along the vehicle width direction. It has become. Such a connection panel 29 is disposed in the instrument panel 2 above the glove box 25 and is configured to receive an impact load in a range where the sheet metal panel 28 is not installed.

In the knee bolster structure of the vehicle according to the embodiment of the present invention, when the knee 30a of the occupant 30 having a general physique collides with the glove box lid 27 and the knee bolster 1 from the directions and positions shown in FIGS. As shown in M1 of FIG. 11 (a), the upper panel members 4 and 5 are largely deformed at the bent portions 8a and 9a in the upper panel portions 8 and 9 and the notches 16 and 17 in the upper flanges 14a and 15a. Absorbs impact load.
6 and 10, the knee 31a of the small occupant 31 collides with the glove box lid 27 and the knee bolster 1, and the lower panel portions 10 and 11 of the upper panel members 4 and 5 are inclined downward. When contacting the surfaces 10a and 11a, as shown by M2 in FIG. 11 (b), it is greatly deformed at the locations of the notches 18 and 19 of the lower flanges 14b and 15b in the upper and lower portions of the lower panel portions 10 and 11, and the impact load Is absorbed. Further, the lower panel members 6 and 7 installed on the back side suppress the movement of the inclined surfaces 10a and 11a in the lower panel portions 10 and 11 of the upper panel members 4 and 5 to the front of the vehicle. Accordingly, the knee 31a of the small occupant 31 can be prevented from entering below the inclined surfaces 10a and 11 of the upper panel members 4 and 5, which is effective against the impact load on the lower side of the knee bolster 1. Will be demonstrated.
In addition, since the impact load can be absorbed by the presence of the sheet metal panel 28 and the connection panel 29 in the glove box lid 27, it is possible to further absorb the impact on the lower side of the upper panel members 4 and 5. An effect is obtained.

Although the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.
For example, in the above-described embodiment, the present invention is applied to the knee bolster 1 disposed on the front side of the passenger seat. However, if there is no problem in layout due to knee input positions of occupants of various physiques, driving It is also possible to apply to a knee bolster disposed in front of the seat.

1 is a perspective view showing a steering support member, an upper panel member, and a lower panel member to which a vehicle knee bolster structure according to an embodiment of the present invention is applied. It is a perspective view which shows a steering support member, an upper panel member, and a lower panel member in the installation range of the glove box to which the knee bolster structure of the vehicle which concerns on embodiment of this invention was applied. FIG. 3 is a perspective view showing a sheet metal panel, a steering support member, an upper panel member, and a lower panel member in the glove box lid in FIG. 2. It is the sectional view on the AA line in FIG. It is the BB sectional view in FIG. It is the CC sectional view in FIG. In the vehicle knee bolster structure according to the embodiment of the present invention, the upper panel member and the lower panel member are perspective views showing a general physique occupant and a small occupant knee collision countermeasure part. FIG. 5 is a perspective view showing a positional relationship between a stopper provided on the upper panel member and a vehicle body member at the center of the vehicle in the vehicle knee bolster structure according to the embodiment of the present invention. It is a perspective view which shows the connection panel which connects a left-right paired upper panel member and lower panel member in the upper part of the glove box where the knee bolster structure of the vehicle which concerns on embodiment of this invention was applied. It is the DD sectional view taken on the line in FIG. 7, and is a conceptual diagram which shows the upper panel member and lower panel member before a collision. (A) is sectional drawing which shows the upper panel member and lower panel member after a passenger | crew's knee of a general physique collides, (b) is the upper panel member and lower side after a small passenger | crew's knee collides It is sectional drawing which shows a panel member. It is a perspective view which shows the steering support member and knee bolster member to which the conventional knee bolster structure of the vehicle was applied. It is a perspective view showing a steering support member, a knee bolster member, and a knee bolster panel to which a conventional vehicle knee bolster structure is applied.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Knee bolster 2 Instrument panel 3 Steering support member 4,5 Upper panel member 6,7 Lower panel member 8,9 Upper panel part 8a, 9a Bending part 10,11 Lower panel part 14a, 15a Upper flange 14b, 15b Lower Flange 16, 17 Notch 18, 19 Notch 20 Screw 21 Car body member 22 Stopper 23 Glove box side stay 24 Instrument panel center member 25 Glove box 26 Box body 27 Glove box lid 28 Sheet metal panel 29 Connection panel

Claims (4)

A pair of left and right upper panel members attached to the steering support member extending along the vehicle width direction at an interval, and an upper end portion attached to the steering support member at an interval on the back side of the upper panel member; And a pair of left and right lower panel members extending downward from the steering support member, wherein the lower end portion of the upper panel member and the lower end portion of the lower panel member are connected to each other.
Flange bent toward the lower panel member is provided on both the left and right sides of the upper panel member , and the upper panel member extends from the steering support member to the vehicle interior side, and the upper panel A lower panel part extending downward from the rear end of the part and extending downwardly toward the front of the vehicle. The upper panel part is provided with two bent parts that divide the length direction into three parts. Of these bent portions, the front side has a downward convex shape, the rear side has an upward convex shape, the flange of the bent portion has notches , and the upper and lower ends of the lower panel portion part notches are provided in the flange located, is arranged at the lower end of the lower panel members disposed closer to the center in the vehicle width direction, toward the body member of the vehicle body center portion That a stopper is provided, the upper portion of the lower panel portion of the upper panel member, the knee bolster structure for a vehicle, characterized by being connected to each other by a connecting panel. 2. The vehicle knee bolster structure according to claim 1, wherein an upper portion of the lower panel portion of the upper panel member is formed to be narrow by a notch of the flange .   3. The vehicle knee bolster structure according to claim 1, wherein the lower panel member is detachably fixed to the upper panel member and the steering support member. A glove box lid is disposed on the vehicle interior side of the upper panel member and the lower panel member, and a sheet metal panel is disposed between the glove box lid and the lower panel portion of the upper panel member. The sheet metal panel is formed in a concave shape formed by a panel portion disposed along the lower panel portion of the pair of left and right upper panel members and a panel portion connecting the panel portions at the lower portion. The knee bolster structure for a vehicle according to any one of claims 1 to 3.

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